How I do I check and make sure my PDFs have different fingerprints?

For each PDF you want to check:

1. Open the PDF in Chrome
   
    
   
2. Activate the Hypothesis extension
   
   
    
3. Click the “<” tab to open the sidebar. Then click on “?” and then “About this version”

    
   

4. The PDF Fingerprint is towards the bottom, marked “Fingerprint”.
   

The PDF fingerprint is a long string of numbers and letters in the Console, it should be different for each version of the PDF you’ve made.

How do I save a copy of a PDF with a different fingerprint?

See our related Knowledge Base article here.